Pulp or paper stock screen.



No. 830,389. PATENTED $13124, 1906.

- w. w. WELLS.

PULP 0R. PAPER $17001: SGREEN. AP PLIOATION FILED MAR. 3, 1906.

. WITNESSES. INVENTOH lfillz'am ilsleyfiils By F60 ATTORNEYS rm: NORRIS PETERS C0,, WAsHmarou, n. c.

ington and State of N ew York, have inyented WILLIAM WESLEY WELLS, OF SANDY HILL, NEW YORK, ASSIGNOR TO MOORE SCREEN CQMPANY, OF SANDY HILL, NEW YORK.

, PULP on PAPER STOCK SCREEN.

UNITED STATES PATENT OFFICE.

' N 0. 830,389. Specification of Letters Patent. Patented Sepi. 4, 1906.

Application filed March 3, 1906. Serial No. 304,038.

To all whom, it may concern: end 0 of the screen 0 discharges into a sliver- Be it known that I, WILLIAM WESLEY outlet H, attached to the under side of the ELLS, a citizen of the United States, and a l casing A. hrough one. side of the sliverresident of Sandy Hill in the county of Washl outlet H and through the open lower end C I of the screen C extends the pulp or paper a new and Improved Pulp or Paper Stock stock feeding pipe I, connected at its lower creen, of which the following is a full, clear, end with a pump J of any approv d conan exact description. struction for forcing the pulp up into the said e invention relates to pulp or paper pipe I and out of the same through sets of IO stock screens, such as shown and described in the Letters Patent Nos. 695,7 54 and 729,382 granted to O. H. Moore on March 18 1902,

and May 26, 1903, respectively.

e ob ect of the present invention is to 15 provide a new and improved pulp or paper minating at their free ends within a short he two upper sets of nozzles I and I have a larger cross-sectional area than the nozzles of t e two lower sets I and I and the nozzles of the two upper sets I and I are Wholly 7c unobstructed, while the lowermost sets of nozzles I and I are provided with valves K or controlling the flow of the pulp from the pipe I through the nozzles I and I The t stock in a comparatively short time c invention consists of novel features 20 and parts and combinations of the same,

represented in the accompanying drawin s,

2 5 forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

igure 1 is a sectional side elevation of the improvement, and Fi 2 is an enlarged sec- ;o tional side elevation of the valve on one of knobs under the control of the operator K adjacent to the knob K is provided With a sleeve K fitting a correspondin bearing in the wall of the sliver-outlet so as to 5 hol t e valvestem K, and consequently its valve K, in either an open or a closed posi- The casing A is preferably in the form of an inverted frustum of a cone and is mounted on a suitable frame B, and within the said 5 casing A is mounted to turn a similarl shaped screen 0, having its lower open end 0 mounted on a stop D, attached to the bottom of the casing A By reference to Fig. 1 it will be seen that e uppermost nozzles I are two in number 0 and extend diametrically in opposite directions from the ipe I, and the nozzles I are also two in number and extend diametricall ed to rotate in suitable bearings F, attached to the top of the casing A. On the shaft E is secured a bevel gearwheel E, in mesh with a similar gear-wheel G, fastened on a shaft mounted to rotate in suitable bearings" F,

nozzles I. e nozzles I and I are similarly arranged-that is, the nozzles 3 extend on the same vertical plane as the nozzles I and at right angles to the nozzles I I, which atter extends in the same vertical plane as e nozzles I Now when the machine is in 1 co operation the pul is forced up the feed-pipe y the action 0 the pump and the pn p finally asses out through the nozzles I I I and l into the screen 0 and against the inner surface thereof, it being understood that t e amount of pulp passing into the screen 0 belt with other'machinery for imparting a rotary motion of the shaft G, which by the gear-wheels G E rotates the shaft E, and :onsequently the screen 0.

e lower end of the casing A is provided with a stock-outlet A, and the lower open can be readil controlled by the operator 1 zle having its valve-stern extendingto the 65 opening or-closing the valves K correspond outside of the screen to allow an operator to ingly, it being understood that the nozzles control the valve.

and I are left unobstructed, as the capacity 6. A pulp or paper stock screen provided 5 of the screen is sufiicient at any time to read with a rotary screen and a pulp-feeder havily accommodate all the pulp that passes out ing valved and non-valved nozz es. 7o the said nozzles I and I and the screen is 7 A pulp or paper stock screen provided also capable to work off some or all of the with a rotary screen, a pulp-feeding pipe expulp that can pass out of the nozzles I and tending within the screen provided with sets 4 If however, the screen becomes overof nozzles for discharging the pulp onto the loaded by the pulp, it is only necessary for the inner surface of the screen and manually- 75 operator to close one or all of the valves K. controlled valves on sundry of the said noz- In order to keep the screen openings or zles. perforations 1n operativeor effective condi- S. Apulp or paper stock screen comprising I 5 tion and to wash down the bulk of the stock a casing, a rotary screen disposed vertically for delivery out through the outlet A, 1 prowithin the said casing, a sliver-outlet on the 8c vide a perforated spray-pipe L, extending said tasin and into which opens the lower into space between the casing A and the open end of the said screen, a stock-outlet 1 screen 0, as plainly indicated in Fig. 1. leadingfrom the lower end of the said casing, The upper end of the spray-pipe L is conapulp-feeding pipe extending into the screen nected by a pipe N with a suitable waterthrough the open lower end thereof, and noz- 85 A supply, and the lower end of the said sprayzles extending laterally from the said pulppipe L is provided with a waste-pipe O.

feeding pipe for discharging the pulp onto t e From the foregoing it will be seen that an inner surface of the screen. exceedingly large feed of the supply-pipe I may be employed having a large num er 0 9. A pulp or paper stock screen comprising a casing, a rotary screen disposed vertically 9o nozzles to feed an exceedingly large quanwithin the said casing, a sliver-outlet on the tity of stock or pulp into the screen and to said casing and into which opens the lower direct this pulp against the inner surface of 0 en end of the said screen, a stock-outlet the screen C to be screened by the latter and leading from the lower end of the said casing,

to pass into the casing A and out of the same by the stock-outlet A.

a pulp-feeding pipe extending into the screen 5 through the open lower end thereof, nozzles The sliver assmg down the inside of the extending laterally from the said pulp-feedscreenCfinalf flows through the open. lower ing pipe for discharging the pulp onto the end G into the sliver-outlet H to be coninner surface of the screen, and -valves on ducted to one side of the machine. sundry of the said nozzles having their stems IO Having thus described my invention, 1

extending through the lower open end of the rlz lai'm as new and desire to secure by Letters screen and through the said sliver-outlet to atent the outside of the casing.

4o 1. A pulp or paper stock screen provided 10. A pulp or paper stock screen compriswith a rotary screen and a stationary pulping a casing, a rotary screen disposed verti- 1 feeder having a plurality of nozzles dischargcally within the said casing, a sliveroutlet on ing onto the inner surface of the screen at dif the said casing and into which opens the lower ferent points of its height. open end of the said screen, a stock-outlet 2. A pulp or paper stock screen provided leading from the lower end of the said casing,

with a rotary screen and a stationary pulpa pulp-feeding pipe extending into the screen I feeder extending into the screen through the through the open lower end thereof, nozzles open lower end thereof and having sets 0. extending laterally from the said pulp-feednozzles discharging onto the interior surface ing pipe for discharging the pulp onto the inof the screen at different points of its height. ner surface of the screen, valves on sundry o 3. A pulp or paper stock screen provide the said nozzles having their stems exten with a rotary screen and a pulp-feeder having through the lower open end of the screen ing sets of nozzles discharging onto the inteand through the said sliver-outlet to the outrior surface of the screen at different points side of the casing, and a spray-pipe extendof its height, the upper sets of nozzles having ing in the space between the sides of the 14 a larger cross-sectional area than the nozzles screen and the side of the casing to spray waof the lower sets. ter exteriorly onto the said screen. 1 4:. A pulp or paper stock screen provided In testimony whereof I have signed my with a rotary screen and a pulp-feeder havname to this specification in the presence of ing a valved nozzle. two subscribing witnesses.

5. A pulp or paper stock screen provided WILLIAM \VESLEY TELLS. with a rotary screen and a pulp-feeder havitnesses: ing a nozzle discharging onto the interior sur- ARTHUR lVlOLAREN, face of the screen and a valve in the said noz- EMMA H. DE VoLL. 

